iPhone to HDMI adapter works for video but no sound (Bluetooth audio doesn’t work either)

Hey everyone, I’m using a Lightning to HDMI adapter on my iPhone to connect it to a monitor so I can play Fortnite. The video works perfectly — but I can’t hear any sound at all.

I tried using my Bluetooth headphones, but once the HDMI is plugged in, audio completely cuts out. It doesn’t play through Bluetooth or through the monitor (which has no speakers). The HDMI adapter is one of those power-needed ones from AliExpress.

I’ve tried: • Reconnecting Bluetooth before and after plugging HDMI • Restarting the phone • Checking volume, etc.

Still nothing. Is this just how iOS handles HDMI audio? Do I need a better adapter (like Apple’s official one) or is there any workaround to force audio through Bluetooth?

Has anyone else fixed this?

Thanks!